I dug up an HEI (not Tom Langdon's but another) I had modified from another Chevy 6 to fit the 235. It was removed running and cleaned up but the floating mount was not altered. You can see it and the measurements below. Total length from flange to tip...4 7/8", bottom of flange to bottom of toothed part of gear...2 3/4" and bottom of flange to very bottom of driven gear...3 3/16".
Attachments
MVC-275F.JPG (27.73 KB, 94 downloads)

~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end